Similar to my WRX cupholder insert (https://www.printables.com/model/534904-2015-subaru-wrx-sti-cupholder-insert-for-vape), I got annoyed with my vape floating around the Supra's cupholder and the juice bottle tipping over if I hit the gas/took a corner without the vape in it. The indents on the insert allow the spring loaded tabs in the cupholder to snap and hold it in place. 

I've attached both the STL and .step files so you can add your own cutouts for whatever you might want to keep secure in the cupholder (Airpods, sunglasses, Red Bull can, etc).